Micron Technology (MU) broke ground Saturday on a ¥1.5 trillion, or $9.3 billion, expansion of its memory chip plant in Hiroshima, Japan, according to a Bloomberg report.
Japan’s government is absorbing a meaningful share of the bill, unusual even for an industry used to public subsidies.
The timing complicates the celebratory mood: Micron committed to the spending two trading days after its stock logged its sharpest slide since the AI rally began.
Japan’s Ministry of Economy, Trade and Industry will provide up to ¥500 billion, or about $3.1 billion, toward the project, according to Bloomberg. That covers roughly a third of the build cost and lets Micron move faster without straining its own balance sheet.
The Hiroshima subsidy is not an isolated gesture. Total Japanese government support committed to Micron now stands at roughly ¥775 billion, or about $4.8 billion, including research funding, Bloomberg reported. That sits inside a ¥101.6 trillion national tech roadmap Tokyo unveiled last month.
Micron picked up the Hiroshima site in 2013 when it acquired bankrupt Japanese DRAM maker Elpida Memory, and the plant later produced the company’s first high-bandwidth memory wafer, a milestone CEO Sanjay Mehrotra invoked at the ceremony.
“When American boldness meets Japanese craftsmanship, you do not get a compromise,” he said, according to Bloomberg.
HBM is the specialized chip stacked alongside AI accelerators, including Nvidia’s, and it has become the industry’s tightest supply bottleneck, one reason Tokyo is willing to underwrite one factory this heavily.
Why the timing looks awkward next to Micron’s stock chart
Micron shares closed down 5.5% at $975.56 on Thursday, part of a two-day slide of roughly 15%, after investor Michael Burry disclosed a new short position against the stock.
Related: Micron Technology’s stock buybacks explained
Burry, known for betting against subprime mortgages before the 2008 crisis, said Micron’s rally is driven by “Fear of missing out, greater fool theory, [and] public commitment bias.”
Micron shares are still up about 698% over the past year, according to data from TheStreet, and the company crossed a $1 trillion market cap in May, CNBC reported.
That run followed a fiscal third quarter in which revenue reached $41.46 billion, up from $9.30 billion a year earlier, Micron said in its earnings release.
Burry argues Micron’s decades-long boom-bust pattern, not the current AI story, is the better guide ahead. He cited 34 drawdowns of more than 30% over 42 years and called Micron a “destroyer of capital” one quarter out of three, according to Stocktwits.
Micron’s own guidance calls for $50 billion in fourth-quarter revenue, a bet this cycle behaves differently.
Micron is still the smallest of the three companies that make HBM
The Hiroshima expansion targets HBM specifically, and the reason is competitive as much as strategic.
SK Hynix controlled roughly 57% of the global HBM market as of the fourth quarter of 2025, with Micron’s share climbing to about 21% over the same span, up from 9% a year earlier, according to Forbes.
Samsung has struggled with qualification delays on newer HBM generations, leaving Micron room to keep closing the gap.
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That is the practical function of the Japanese subsidies. They let Micron expand in Hiroshima without diverting cash from its separate $200 billion U.S. manufacturing push, including a planned Syracuse, New York campus and new fabs in Idaho.
Shipments from the expanded Hiroshima line are targeted for the summer of 2028, a timeline that assumes today’s memory shortage lasts at least two more years.
A few numbers that put the bet in context:
- SK Hynix plans roughly $29 billion in capital expenditures in 2026 alone, more than double its pre-boom spending, according to Reuters.
- Micron’s data-center revenue reached $25 billion last quarter, more than its entire revenue a year earlier, according to its earnings release.
- Burry’s broader short basket also includes Nvidia, Tesla, and Applied Materials, all tied to AI infrastructure spending, according to Seeking Alpha.
The subsidy race has no obvious finish line
Japan’s bet on Micron reflects a broader judgment that memory chips are now too strategically important to leave to market forces alone.
South Korea, the U.S., and Japan are each subsidizing the same handful of companies to build the same capacity, racing toward a demand curve that assumes AI spending keeps climbing.
That assumption hasn’t been tested by a real downturn since the AI buildout began, and Burry’s short is effectively a bet that it will be.
Whether Tokyo’s yen looks like a smart early investment or a subsidy for excess capacity depends on what memory prices look like once every fab breaking ground this year actually starts shipping.
